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Install backport during netinstall installation process

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  Install backport during netinstall installation process Rory Campbell-Lange <rory@campbell-lange.net> - 2019-05-16 15:10 +0200
    Re: Install backport during netinstall installation process Curt <curty@free.fr> - 2019-05-16 19:00 +0200
      Re: Install backport during netinstall installation process Rory Campbell-Lange <rory@campbell-lange.net> - 2019-05-17 09:10 +0200
        Re: Install backport during netinstall installation process Curt <curty@free.fr> - 2019-05-17 11:00 +0200
          Re: Install backport during netinstall installation process Rory Campbell-Lange <rory@campbell-lange.net> - 2019-05-17 17:10 +0200
            Re: Install backport during netinstall installation process Curt <curty@free.fr> - 2019-05-17 18:00 +0200
    Re: Install backport during netinstall installation process Brian <ad44@cityscape.co.uk> - 2019-05-17 19:10 +0200

#208693 — Install backport during netinstall installation process

I've been struggling to fully setup some machines with A2SDi-8C-HLN4F
motherboards and Intel x553 NICs (which require recent ixgbe support) as
Debian stable machines.

Thanks to considerable help from this list, I've been able to
successfully setup the machines over the net using buster/testing
netinstall images, which allow one to select stretch/stable at install
time, then reboot into rescue mode on the netinstaller and install
kernel-image-4.19.0-0.bpo from backports to provide a stable system and
kernel with ixgbe support.

However this doesn't work when running root off a RAID1 array with
dm_crypt on top. Rescue mode can't both reassemble the array and decrypt
the volume. While I can do that from the rescue shell I don't know how
to pivot to make the decrypted volume root so I can install the backport
kernel. **

Consequently I'd be grateful to know if:

* it is possible to somehow install the backport kernel and dependencies
  during the netinstall process 
  (apt-get install doesn't seem available on the virtual terminals)

* alternatively, what mount point and commands should I use to make a
  root file system (which I've re-raided and decrypted) available to the
  buster installer in rescue mode

Thanks very much
Rory


** there is another issue, which is the stretch grub doesn't seem to be
able to decrypt a dm_crypt volume when made from buster. I've reported
that to debian-boot.

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#208697

On 2019-05-16, Rory Campbell-Lange <rory@campbell-lange.net> wrote:
>
> Consequently I'd be grateful to know if:
>
> * it is possible to somehow install the backport kernel and dependencies
>   during the netinstall process 
>   (apt-get install doesn't seem available on the virtual terminals)

I guess preseeding is one way of doing it (gleaned from a rapid internet
search):

https://blog.raymond.burkholder.net/index.php?/archives/899-Debian-Preseed-Backport-Kernel.html

> * alternatively, what mount point and commands should I use to make a
>   root file system (which I've re-raided and decrypted) available to the
>   buster installer in rescue mode


> Thanks very much
> Rory
>
>
> ** there is another issue, which is the stretch grub doesn't seem to be
> able to decrypt a dm_crypt volume when made from buster. I've reported
> that to debian-boot.
>
>
>


-- 
“When he was dry, he believed it was alcohol he needed, but when he had a few
drinks in him, he knew it was something else, possibly a woman; and when he had
it all — cash, booze, and a wife — he couldn’t be distracted from the great
emptiness that was always falling through him and never hit the ground.” – Denis Johnson

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#208709

On 16/05/19, Curt (curty@free.fr) wrote:
> On 2019-05-16, Rory Campbell-Lange <rory@campbell-lange.net> wrote:
> >
> > Consequently I'd be grateful to know if:
> >
> > * it is possible to somehow install the backport kernel and dependencies
> >   during the netinstall process 
> >   (apt-get install doesn't seem available on the virtual terminals)
> 
> I guess preseeding is one way of doing it (gleaned from a rapid internet
> search):
> 
> https://blog.raymond.burkholder.net/index.php?/archives/899-Debian-Preseed-Backport-Kernel.html

That is very helpful, Curt. Thanks a lot.

Apart from the link you've kindly pointed me to, there is also an
ancient but still pertinent-seeming post here about using preseed files
with netboot:
https://www.credativ.com/credativ-blog/2010/07/howto-debian-preseed-with-netboot

Also the manual at https://www.debian.org/releases/stretch/amd64/apbs02.html.en
suggests one can provide a preseed.cfg file via tftp, e.g.

  preseed/url=tftp://host/path/to/preseed.cfg
  preseed/url/checksum=5da499872becccfeda2c4872f9171c3d

I'll give that a go.

Thanks a lot!
Rory

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#208716

On 2019-05-17, Rory Campbell-Lange <rory@campbell-lange.net> wrote:
> On 16/05/19, Curt (curty@free.fr) wrote:
>> On 2019-05-16, Rory Campbell-Lange <rory@campbell-lange.net> wrote:
>> >
>> > Consequently I'd be grateful to know if:
>> >
>> > * it is possible to somehow install the backport kernel and dependencies
>> >   during the netinstall process 
>> >   (apt-get install doesn't seem available on the virtual terminals)
>> 
>> I guess preseeding is one way of doing it (gleaned from a rapid internet
>> search):
>> 
>> https://blog.raymond.burkholder.net/index.php?/archives/899-Debian-Preseed-Backport-Kernel.html
>
> That is very helpful, Curt. Thanks a lot.

All the experts are on vacation, apparently, but I think a
less-involved, feasible method would be to use the netinstall iso
normally but after grub installation (and *before reboot*), from a
virtual terminal, 'chroot' into /target and install the backported
kernel deb manually with 'dpkg -i' (you could mount a thumb drive
containing the downloaded kernel or wget the kernel from the appropriate
repository).

I'm sure someone here can offer you the exact details of how to do that.

Good luck.

> Apart from the link you've kindly pointed me to, there is also an
> ancient but still pertinent-seeming post here about using preseed files
> with netboot:
> https://www.credativ.com/credativ-blog/2010/07/howto-debian-preseed-with-netboot
>
> Also the manual at https://www.debian.org/releases/stretch/amd64/apbs02.html.en
> suggests one can provide a preseed.cfg file via tftp, e.g.
>
>   preseed/url=tftp://host/path/to/preseed.cfg
>   preseed/url/checksum=5da499872becccfeda2c4872f9171c3d
>
> I'll give that a go.
>
> Thanks a lot!
> Rory
>
>


-- 
“When he was dry, he believed it was alcohol he needed, but when he had a few
drinks in him, he knew it was something else, possibly a woman; and when he had
it all — cash, booze, and a wife — he couldn’t be distracted from the great
emptiness that was always falling through him and never hit the ground.” – Denis Johnson

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#208738

On 17/05/19, Curt (curty@free.fr) wrote:
> On 2019-05-17, Rory Campbell-Lange <rory@campbell-lange.net> wrote:
> > On 16/05/19, Curt (curty@free.fr) wrote:
> >> On 2019-05-16, Rory Campbell-Lange <rory@campbell-lange.net> wrote:
> >> >
> >> > * it is possible to somehow install the backport kernel and dependencies
> >> >   during the netinstall process 
> >> >   (apt-get install doesn't seem available on the virtual terminals)
> >> 
> >> I guess preseeding is one way of doing it (gleaned from a rapid internet
> >> search):
> >> 
> >> https://blog.raymond.burkholder.net/index.php?/archives/899-Debian-Preseed-Backport-Kernel.html
> >
> > That is very helpful, Curt. Thanks a lot.
> 
> All the experts are on vacation, apparently, but I think a
> less-involved, feasible method would be to use the netinstall iso
> normally but after grub installation (and *before reboot*), from a
> virtual terminal, 'chroot' into /target and install the backported
> kernel deb manually with 'dpkg -i' (you could mount a thumb drive
> containing the downloaded kernel or wget the kernel from the appropriate
> repository).
> 
> I'm sure someone here can offer you the exact details of how to do that.

Thanks again for the advice.

I'm pretty sure dpkg isn't available in /target but I didn't try a
chroot so maybe I'll give that another go!

Many thanks
Rory

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#208743

On 2019-05-17, Rory Campbell-Lange <rory@campbell-lange.net> wrote:
>> 
>> I'm sure someone here can offer you the exact details of how to do that.
>
> Thanks again for the advice.
>
> I'm pretty sure dpkg isn't available in /target but I didn't try a
> chroot so maybe I'll give that another go!

Well, it's what seems to happening here, for example:

https://wiki.debian.org/DebianInstaller/MultipathSupport

 switch to the second VT using CTRL-ALT-F2.
 copy the patched grub to /target/tmp
 chroot /target dpkg -i /tmp/grub_*.deb
 switch back to the first VT using CTRL-ALT-F1 and continue with the installation.

 

> Many thanks
> Rory
>
>


-- 
“When he was dry, he believed it was alcohol he needed, but when he had a few
drinks in him, he knew it was something else, possibly a woman; and when he had
it all — cash, booze, and a wife — he couldn’t be distracted from the great
emptiness that was always falling through him and never hit the ground.” – Denis Johnson

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#208750

On Thu 16 May 2019 at 14:01:43 +0100, Rory Campbell-Lange wrote:

[...]

> Consequently I'd be grateful to know if:
> 
> * it is possible to somehow install the backport kernel and dependencies
>   during the netinstall process 
>   (apt-get install doesn't seem available on the virtual terminals)

You could consider preseeding the installation with a late_command to
add backports to sources.list and update and install with apt-get.
This wouldn't suit you, but it can be adapted:

d-i preseed/late_command string                                                                                 \      
    mkdir /target/media/ARCHIVE-9;                                                                              \      
    mount --bind /hd-media /target/media/ARCHIVE-9;                                                             \      
    sed -i 's/^/#/' /target/etc/apt/sources.list;                                                               \      
    echo "deb [ trusted=yes ] file:/media/ARCHIVE-9/debian jessie main contrib" >> /target/etc/apt/sources.list;       
        \                                                                                                              
    in-target apt-get update;                                                                                   \      
    in-target apt-get -y install mc gpm vim bash-completion less;

-- 
Brian.

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